Multilayer wiring substrate having a castellation structure

Abstract

A multilayer wiring substrate has a through hole that passes from a first surface through to a second surface. The multilayer wiring substrate includes an electrical connection terminal formed in at least one of an inner edge portion which is a periphery of the through hole, an outer edge portion which is an outer periphery of the substrate, and a non-edge portion, on at least one of the first surface and the second surface. The electrical connection terminal has a castellation structure that does not pass through to a surface opposite to a formation surface.

Description

BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]The present invention relates to a multilayer wiring substrate, a stack structure sensor package, and a method of manufacturing the stack structure sensor package that are applied to an image sensor and the like.[0003]2. Description of the Related Art[0004]Japanese Unexamined Patent Application Publication No. 2002-353427 proposes a stack structure sensor package of an image sensor.[0005]FIG. 1 illustrates the stack structure sensor package of the image sensor as disclosed in Japanese Unexamined Patent Application Publication No. 2002-353427.[0006]In a sensor package structure in FIG. 1, a frame-shaped second substrate 2 is joined onto a first surface of a first substrate 1, thereby forming a cavity 3.[0007]An integrated circuit 4 is mounted on the first surface of the first substrate 1 in the cavity 3, and an image sensor chip 5 is joined onto the second substrate 2. Thus, the stack structure sensor package is formed.S...

AI Technical Summary

Benefits of technology

This patent is about a new way to make small and thin electronic circuits. The problem with current methods is that they often result in failures during manufacture. With this new method, however, a sensor component can be reused even if there are failures, and the connection between the components can be strengthened, making the overall structure more reliable and efficient. This method can be used to create stack structure sensor packages, which are a type of electronic circuit commonly used in various industries.

Problems solved by technology

However, the above-mentioned structure is limited to a stack-up manufacturing process in which the integrated circuit 4 is joined after the cavity 3 is formed by the first substrate 1 and the second substrate 2.

Since the stack-up in the same process step is necessary, a manufacturing location is limited.

Besides, occurrence of a failure causes a high disposal cost.

However, there may be a problem with connection strength because a joint area is limited to the bottom surface.

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